这个solution 就像时间一样古老。

前面已经描述过了。放入函数。php

class iWC_Orderby_Stock_Status
{

 public function __construct()
 {
  // Check if WooCommerce is active
  if (in_array(\'woocommerce/woocommerce.php\', apply_filters(\'active_plugins\', get_option(\'active_plugins\')))) {
   add_filter(\'posts_clauses\', array($this, \'order_by_stock_status\'), 2000);
  }
 }

 public function order_by_stock_status($posts_clauses)
 {
  global $wpdb;
  // only change query on WooCommerce loops
  if (is_woocommerce() && (is_shop() || is_product_category() || is_product_tag())) {
   $posts_clauses[\'join\'] .= " INNER JOIN $wpdb->postmeta istockstatus ON ($wpdb->posts.ID = istockstatus.post_id) ";
   $posts_clauses[\'orderby\'] = " istockstatus.meta_value ASC, " . $posts_clauses[\'orderby\'];
   $posts_clauses[\'where\'] = " AND istockstatus.meta_key = \'_stock_status\' AND istockstatus.meta_value <> \'\' " . $posts_clauses[\'where\'];
  }
  return $posts_clauses;
 }
}

new iWC_Orderby_Stock_Status;